Find the mistakes in the sentences. 1. you work is best! 2. mary is interesting than jane 3. spain is dryer than britain 4. i am more clever than my brother

 
1. You work best!
2. With Mary interesting than Jane.
3. In Spain drier than in England
4. I am  cleverer than my brother

1. you work best/your work is the best
2. mary is more interesting than jane
3. Spain is more dry than Britain
4 I'm cleverer than my brother.
в предыдущем ответе ошибка во 2 предложении

Kiev is the capital of Ukraine and one of the oldest cities in Europe. It has a long history and rich culture. There are many ancient churches, cathedral, monuments, outstanding buildings and museums in it. All in all the city of Kiev has a great number of interesting sights. Perhaps the most beautiful and famous ones are Kyiv Pechersk Lavra, Saint Sophia’s Cathedral, Golden Gates of Kiev, the Monument to Bogdan Khmelnitsky, and Khrischatyk-street. Let me tell you a little bit about each of these places. 

If we ever find another inhabited planet, somebody will surely come up with a brilliant idea of trading with them. In this case, our governments will need to make sure that the traders from the other civilization will be treated properly. If they are developed enough for us to communicate with them, they are not going to be fond of the perspective of being cheated out of money by the frauds from Earth. As we all know, a fair share of deals in human history consisted of attempts to fool one another.
But before all this, a way to travel among the start needs to be invented.